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view agent/src/share/classes/sun/jvm/hotspot/oops/AccessFlags.java @ 17716:cdb71841f4bc
6498581: ThreadInterruptTest3 produces wrong output on Windows
Summary: There is race condition between os::interrupt and os::is_interrupted on Windows. In JVM_Sleep(Thread.sleep), check if thread gets interrupted, it may see interrupted but not really interrupted so cause spurious waking up (early return from sleep). Fix by checking if interrupt event really gets set thus prevent false return. For intrinsic of _isInterrupted, on Windows, go fastpath only on bit not set.
Reviewed-by: acorn, kvn
Contributed-by: david.holmes@oracle.com, yumin.qi@oracle.com
author | minqi |
---|---|
date | Wed, 26 Feb 2014 15:20:41 -0800 |
parents | da91efe96a93 |
children |
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/* * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ package sun.jvm.hotspot.oops; import sun.jvm.hotspot.runtime.ClassConstants; import java.io.*; public class AccessFlags implements /* imports */ ClassConstants { public AccessFlags(long flags) { this.flags = flags; } private long flags; // Java access flags public boolean isPublic () { return (flags & JVM_ACC_PUBLIC ) != 0; } public boolean isPrivate () { return (flags & JVM_ACC_PRIVATE ) != 0; } public boolean isProtected () { return (flags & JVM_ACC_PROTECTED ) != 0; } public boolean isStatic () { return (flags & JVM_ACC_STATIC ) != 0; } public boolean isFinal () { return (flags & JVM_ACC_FINAL ) != 0; } public boolean isSynchronized() { return (flags & JVM_ACC_SYNCHRONIZED) != 0; } public boolean isSuper () { return (flags & JVM_ACC_SUPER ) != 0; } public boolean isVolatile () { return (flags & JVM_ACC_VOLATILE ) != 0; } public boolean isBridge () { return (flags & JVM_ACC_BRIDGE ) != 0; } public boolean isTransient () { return (flags & JVM_ACC_TRANSIENT ) != 0; } public boolean isVarArgs () { return (flags & JVM_ACC_VARARGS ) != 0; } public boolean isNative () { return (flags & JVM_ACC_NATIVE ) != 0; } public boolean isEnum () { return (flags & JVM_ACC_ENUM ) != 0; } public boolean isAnnotation () { return (flags & JVM_ACC_ANNOTATION ) != 0; } public boolean isInterface () { return (flags & JVM_ACC_INTERFACE ) != 0; } public boolean isAbstract () { return (flags & JVM_ACC_ABSTRACT ) != 0; } public boolean isStrict () { return (flags & JVM_ACC_STRICT ) != 0; } public boolean isSynthetic () { return (flags & JVM_ACC_SYNTHETIC ) != 0; } public long getValue () { return flags; } // Hotspot internal flags // Method* flags public boolean isMonitorMatching () { return (flags & JVM_ACC_MONITOR_MATCH ) != 0; } public boolean hasMonitorBytecodes () { return (flags & JVM_ACC_HAS_MONITOR_BYTECODES ) != 0; } public boolean hasLoops () { return (flags & JVM_ACC_HAS_LOOPS ) != 0; } public boolean loopsFlagInit () { return (flags & JVM_ACC_LOOPS_FLAG_INIT ) != 0; } public boolean queuedForCompilation() { return (flags & JVM_ACC_QUEUED ) != 0; } public boolean isNotOsrCompilable () { return (flags & JVM_ACC_NOT_OSR_COMPILABLE ) != 0; } public boolean hasLineNumberTable () { return (flags & JVM_ACC_HAS_LINE_NUMBER_TABLE ) != 0; } public boolean hasCheckedExceptions() { return (flags & JVM_ACC_HAS_CHECKED_EXCEPTIONS ) != 0; } public boolean hasJsrs () { return (flags & JVM_ACC_HAS_JSRS ) != 0; } public boolean isObsolete () { return (flags & JVM_ACC_IS_OBSOLETE ) != 0; } // Klass* flags public boolean hasMirandaMethods () { return (flags & JVM_ACC_HAS_MIRANDA_METHODS ) != 0; } public boolean hasVanillaConstructor() { return (flags & JVM_ACC_HAS_VANILLA_CONSTRUCTOR) != 0; } public boolean hasFinalizer () { return (flags & JVM_ACC_HAS_FINALIZER ) != 0; } public boolean isCloneable () { return (flags & JVM_ACC_IS_CLONEABLE ) != 0; } // Klass* and Method* flags public boolean hasLocalVariableTable() { return (flags & JVM_ACC_HAS_LOCAL_VARIABLE_TABLE ) != 0; } // field flags public boolean fieldAccessWatched () { return (flags & JVM_ACC_FIELD_ACCESS_WATCHED) != 0; } public boolean fieldModificationWatched() { return (flags & JVM_ACC_FIELD_MODIFICATION_WATCHED) != 0; } public boolean fieldHasGenericSignature() { return (flags & JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE)!= 0; } public void printOn(PrintStream tty) { // prints only .class flags and not the hotspot internal flags if (isPublic ()) tty.print("public " ); if (isPrivate ()) tty.print("private " ); if (isProtected ()) tty.print("protected " ); if (isStatic ()) tty.print("static " ); if (isFinal ()) tty.print("final " ); if (isSynchronized()) tty.print("synchronized "); if (isVolatile ()) tty.print("volatile " ); if (isBridge ()) tty.print("bridge " ); if (isTransient ()) tty.print("transient " ); if (isVarArgs ()) tty.print("varargs " ); if (isNative ()) tty.print("native " ); if (isEnum ()) tty.print("enum " ); if (isInterface ()) tty.print("interface " ); if (isAbstract ()) tty.print("abstract " ); if (isStrict ()) tty.print("strict " ); if (isSynthetic ()) tty.print("synthetic " ); } // get flags written to .class files public int getStandardFlags() { return (int) (flags & JVM_ACC_WRITTEN_FLAGS); } }